for design and certification of the failed battery, but for knowledge that can be applied to emerging technologies going forward. " that was deborah hersman of the ntsb. hersman also said "it is imperative to undersand how to best oversee the batteries' development and certification." officials from boeing, the faa and the 787's battery manufacturers are all being called to testify. mcdonald's is being punished by a consumer agency in brazil. according to reuters, the burger chain must pay a $1.6- million fine because it targeted children with its happy meal advertising and toys. a spokesperson for mcdonald's declined to comment on the fine. in the latest round of earnings, coach and dupont emerged as winners. luxury buyers gave coach stock a bounce. the company posted better-than- expected sales. shares traded 10% higher on the news. meanwhile, last summer's drought helped to double profits for crop chemical-maker dupont. airline stocks for delta and u.s. airways both popped. the airlines reported higher first quarter profits. however, delta says it's already anticipating lower profits due to seq